Vibrating screen or separator.



W. J. BELL. VIBRATING SCREEN 0R SEPARATOR.

APPLICATION FILED JUNE 3,'1912. 1,1 14,097. Patented oct. 20,1914.

r 6 SHEETS -SHEET 1.

.SW MUY J. BELL.

VIBRATING SCREEN 0R SEPARATOR.

APPLICATION FILED JUNE 3,1912. 1,1 14,097'. Patented oct. 20, 1914.

6 SHEETSSHEIIT 2,

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W. LBELL VIBRATING SCREEN 0R SEPARATOR.

APPLICATION FILED .TUNE 3 1912.

Patented 0013.20, 1914.

6 SHEETS-SHEET 3.

W. J. BELL. VIBRATING SCREEN 0R SB'PARATOR.

. APPLICATION FILED JUNE 3.1912. 1,1 14,097, Patented Oct. 20,1914,

6 SHEETS*SHEET 4.

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VW. J. BELL. YIRATING SCREEN 0R SEPARATOR.

APPLIQATION FILED JUNE 3,f y1912.

Patented Oct. 20, 1914.

6 SHEETSSHEET 5.

W. J. BELL, VIBRATING SSRI-EN 0R .SEPAMTOR.f

APPLICATION PILFD JUNE 3, i912.

6 SHEIITSSHEET 6.

unirsi) Ysfifirriis rigriinr orrioii.

WILLARD J. BELL, or NEWiiYGo, MICHIGAN.

vVIBRIING SCREEN OR SEEARATOR.

To ai! whom it mag/'coaccrm y Be it known that I, WILLARD J'. BELL, a

.citizen of the United `States, residing at Newaygo, in the county of Newaygo and State of Michigan, have inventedor discovered certain new and usei'ul Improvements in Vibrating Screens or Separators, of which the following is a specification, reference beingiiad therein to the' accompanying drawings.

This invention relates to that class of i:ibrating screens or separators in which the screens yor screen frames are jarred or vibrated by percussive action or impact.

The present-invention relates to certain novel features whereby the vibratory action Vof the screens may be rendered more eii'ective by imparting longitudinal shaking movements, and preferably also slight rising andl falling movements, thereto, in addition tothe/jarring movements resulting from percussive,action;v lAlso in the -present novel separator provision is .made for varying the forcent the blows Aoi. the hammers which' operate/'the impact bars, as also, prefl erably, for-softening or cushioning-somewhat the blows/of the hammers, and tor feeding the material to the screen insueh a manner as to insure a more ev'ei-i distributioii oi' the material than heretofore.

ln the accompanying drawings Figure lf is a. plan view and Fig. 2 a side view showing one' form of the invention, with parts broken away for cleariiess of illustration. Fig. 3 is a transverse vertical section of tlie machine on line 3 3, Fig. 2. Fig. 4 is a plan view, and Fig. 5 a side view showing vanother form of the invention more particularly adapted for .wet screening, and for which purpose the improved machine is more especially'designed. Fig. (l is a detail` view of one of the impact bars. Figs. '7 and S are. detail views showing one of the adjustable supports or tracks on which the wheels of the screen framesupport run. Fig. 9 is a detail view to show the adjustable iecdboard or plate and the feed box. Fig. l() is a detail view of one of the-connecting rods and one of the bars forming part oi the screen. shaking mechanism. Fig. 11 is a detail view` showing one o'i the inountings of the screen frame.

Referring to Figs. 1,' 2 and 8 ofthe closing a vibrating screen, and which boX or- Specification of Letters Patent. Patented ct, ,20, 1914..

Application filed June 3, 1912.

Serial No. 701,275.

easing will, in practice, lie-closed at its top, sides and ends. Supported at the upper .end of the box or casing 18 is a casing 11i provided at one end with a hopper 15, the

struction, -the, said conveyer serving to distribute tlie incoming 'material in a suitable receptacle in the said box or casing 14. The .receptacle receiving the material to' be screened is constructed at one side with an adjustable feed board or distributing plate 19 over which the material is fed or forced by the screw conveyer and from whence Yit falls into a vibrating feeder 20 suitably arranged to receive said material.4 .The feeder 20 consists of a curved steel trough or receptacle extending across the machine, and over the front edge of which the material to be separated is delivered as the said feeder is vibrated or shaken. The 'feed board 0r distributing plate 19 has an inclined upper edge Vwhich highest at the end thereof adjacent the hopper 15 and lowest at its opposite end, so that the iii-coming material will be somewhat evenly distributed crosswise of the separator as it passes over the said plate, and the vibrating feeder Q0 will still iiiiither assist in an even distribution ot' the material. By adjusting the feed boardl or distributingr plate up or down, or to diiierent angles ot' inclination lengthwise of said beard or plate, the feed may be varied.

Suitably mounted at the upper end of the machine frame. oi casing 13 .is a shaft 21 provided with a driving pulley 22 which will be belted to any suitable source of power, the` said shaft being furnished with eccentrics 23 connected by rods 24 lia-ving tion of the screen frameto the shaft `21 slight longitudinal reciprocating oi' shaking motions1 will be imparted to the said screen frame 'which is furnished, as usual, with `wire gauze or otherscreen clothing. The

screen iranie rests on the cross shafts 245 and 24 and 1s provided with clips or brackwith a driving pulley 17, said shaft carry- Aing a screw conveyer 18 of well-known con- Cil ets 25a en'ibracing said cross shafts, so that it may be readily applied to or lifted therefrom. The said cross shafts extend outward through suitable openings in the sides of thc .casing 13 and are igirovideiil with wheels 2li which. run on. brackets allording tracks for said wheels, and which brackets are atA tached Ato the sides of the box or casing 13 Ain such a manner that their positions maybe varied for the purpose of if'arying the angle of inclination thereof, so as to cause the vibrating or shaking screen to rise and fall inore'or less as it is recipi-ocated endwise. This variation of the angle ot inclination oi" the tracks is effected by providing each ot' the brackets 27 with several holes 28, through .'vhich the lower attaching screw 29 passes, and with a single hole 30 for the passage of the upper attaching screw 31. To change the angle of inclination of a bracket the screw 29 is removed and the bracket is swung slightly on the upper attaching screw as'a pivot to bring another hole 28 into position to register with the hole in the side ot the casing through which said screw passes, and then replacing said screw 29 and tightening both screws. l i

Mounted on the hinged. top 52 of the bos; or casing 13 are brackets 32 which support shafts 33, 31- and each of which, in the present machine, is provided with a plurality of double crank arms 3G. The shaft 33 is provided with a pulley 37 which may be belted to a pulley 33 on the conveyor shaft 1G, and with a pulley-39 which may be belted to a pulley 40 on the shaft 35. The shaft is also provided witha may be belted to 'the pulley Ll2 on the shaft 34. W ith this construction and arrangements of parts the shafts 33, 3l and 35 may be driven from the conveyor shaft.

The top of the box or casing 13 also`; supports a series ot brackets 43 1n which arepivotally mounted hammers or hammer bars 44 arranged to be lifted by rollers l5 car- Aried by the double crank arms 36. The free ends ol the hammers 44C are disposed over impact bars 1-5 which rest on portions of the.

screen iframe or on protecting plates with which the' wire-mesh screen is provided, so that as the said hammers fall by gravity on saidimpact bars 15, after having been lifted by the rollers d5, percussive jarring movements will be imparted to the screen, in addition to the shaking movements imparted thereto from the eccentrics 23, For the purpose of varying the force of the blows of thev hammer bars or hammers L14, due to gravity, the brackets 43 are provided with a. series ol holes into which the pivot pins for the said hammer bars or hammers' may be inserted, and the said hammer bars or hammers are also each provided with a. series of holes 'for' the reception of the. said pivot pins. By changing a pivot pin from pulley 41 which a position more remote from the 'lree .end of a hammer bar to a. position nearer to the said free end, the working length of the hammer har, and the weight ot the working end ot' such hammer bar, will be varied, so as to vary the AIfalling force of the blow lelivered by said hammer bar and due to gravity.

For the purpose of cushioning or softening somewhat the impact due to the blows ot the hammers 'or hammer hars il on the impact bars 45, the said impact bars are preferably lormed of'sleel tubing filled with round blocks l? oit' wood projecting at both ends beyond the tubing, so that 'the impact ot the hammers orhammer bars is received on the ends of the said "blocks of' wood, and the impact is also delivered to the screen or screen trame through the said blocks. These impact bars l5, the bodies of which are formedy of blocks of wood #7 inclosed in and protected by thin steel tubing` as shown in Fig. (l, are comlmrativcly light so that they will have comparatively little inertia, and lighter hammer blows may therefore be employed, for causing an elicctive jarring ot the screens, than would be required with solid metal impact bars. Thus not only are the jarring blows of the lammer bars el properly cushioned by the. impact bars constructed as just described, but an advan* tage is secured in lightening the blows of the hammer bars, as just above stated. The lower ends of the impact bars Yare received in cupped sockets formed on -l'oot pieces connected with the screens or screen iframes, as more clearly shown in Figs. 1,2 and l ot' the drawings, and these cupped sockets prevent vthe lower ends of the wooden bodies ot the limpact bars from becoming battered or curled up. Thus the 'construction rct'errcd to provides impact bars which are very durable and eiiicient. The vibrating feeder 20 is suitably piv` otedl or is hung on a rock shaft L18 provided with an arm 49 connected by a link 50 with a sleeye or bracket 51 on one` of the connecting rods 2l; or, if desired, the said rock-shaft may have arms at both ends -connected by links with both of4 said con necting rods. W' ith this construction it will. be understood that the vibrating feeder 2O will be operated fromthe same eccentries which impart shaking movements to the screen frame.

At theflower end of the screen is a discharge passageway for discharging the taillngs ot' the screen.- The line material passiugthrough the screen falls down through th/'e partly open bottom of the screen box 0r casing 13 into a receptacle or hopper 53.

The angle of inclination of the inclined screen in the box or casing '13 may be varied by blocking upv either the front or rear part of the machine, as may sometimes be desirable in screening' or separating different kinds of material.

rlhe separator shown in Figs. 4. and 5 is essentially the same in construction and operation as that illustrated in Figs. l, 2 aint 3, excepting as to the means for feeding the material to the screen, and the parts are mainly designated by similar reference numerals. The form of Separator shown in l1`ijrs. l, land 3. is intended foixdry screening`I while the form ot' separator shown in Figs. -l and 5 is more particularly adapted for wet screening` and to this end is p rovided with an inclined and downwardly flaring' sluiceway or spout 54; to deliver the material to beserecned and the bottom ot' which is provided with a series of distributing brackets which will serve to spread out the wet slurry or pulp so that it will be as evenly distributed as possible as it passes to the inclined feed board 56, forming a lower continuation of said sluieeway or spout, and from which it is delivered to the screen.

Frein the .foregoing it will be understood that in the operation of the improved separa- 'tor the screen will be slinken or reciprocated back and `lorth 'from the eccentrics E3, and in thc-ee shaking or reciprocatinei movements :hay be cansed to travel in different planes or to rise and t'all more or less by varying the anifles of the traek brackets Qi', as hereinoelore described. These combined shaking.;r and vertical movements ot the screen frame have been l'faind to be ot' gfriat advantage in screening' most materials, the vertical naivcments being; varied to secure the most ellicient operation of the machine with the particular' material which may be passing` through it. As the screen is shaken or reciprocattal back and `forth it will also be subjected to laircussive jarring movements imparted thereto from the hammers or haan mer bars ll through the, impact bars 45. ily varying: the l'orce ol the impact blows oli tlie, hammers or hammer bars. by varying' llie lengths ol' the workingends of the said hannncrs or hammer bars, due to (,'lmnging the positions ol"the pivots ol the said hammers or hammer bars, the nnicliine is capable ol variations: lo z-ceennmalate dil'erent kinds ol` materials. and secure the mest ellieient or dcfdrable. results.

ri`hc inclined screen "5 cmployial in this improved separator will preferably be a woven wire screen olx any desired mesh, and one or more oll anch screens, mounted on the vibraliire` screen lrame 253, may be employed. ."toy other desired lorni oll metallic sertain may, hoi-verser, be used instead ol the, wovon wire screen or screens rel'crrcd to, as, 'or

.some purposes, it may be l'ound preferable vary the cross shafts when the hinged top of the casing is raised, and then inserting another screen of a different r similar mesh.

The invention is not to be understood as being limited to the details of construction herein shown and. described, as these may be varied widely, within the province of n'ieehanical skill, without departing from the essence oi the invention. In other words, other mechanisms than those herein shown and described may be employed for shaking and pereussiveiy arringthe screen or Screen frame, without varying?r the results secured by the invention. p

Having,l thas described my invention I claim and desire to secure by Letters Patent:

l. In a separator, the conibination with an inclined screen, ot' means for shaking't-he same, means ior imparting vertiad or up and down .movement to said screen while it is being. shaken, means whereby the extent of said vertical or npand down movements may be "ai.'ied,'and means, comprising ham-v mers and impact bars, for jarring 'said screen pereussively.

Q. In a separator, the combination with a screen casing, of a screen `frame housed within said casing, crossshatts on which said screen frame is supported, wheels on the opposite ends of said shafts outside ot said casing, means ilor imparting lengthwise reciprocatingl movements to said screen frame, pivotally`mounted adjustable brackets at the sides el the said casing and having' tracks on which said wheels run, said tracks being inclined to the plane of the lengthwise reciprocating movements of said l'rame, so as to impart vertical or up and down movements to the latter, said brackets each'havingr a plurality of holes below their pivots, and fastening; bolts adapted to enter dill'erent holes in said brackets to secure the latter in dill'erent positions; whereby, by vanyintg the positions ot' said brackets, the extent ol the up and down movements of the. .said ,screen l'rame may be varied.

l. ina separator, the eombinatioi` with an ii-ulinefl mctallio screen, ol grav; y-im polled hammer bars l'or jarring tl.e/\same pereussively, impact bars through which the liorte ol'v the, said hanuner bars is conveyed to said screen, brackets and pivot pins l'or supporting,r said hammer bars, said hammer bars and brackets being' caclrprovidml with .a series ol holes lor the reception olA said pivot-pins sothatbyeliangingthe positions ol' said pins the lengrths oll the. working ends oli the said hammer bars may be. varied to l'orce ol the blows delivered thereby.

-l. ln a separator, the combination with an inclined metallic screen` oi' hammers dl' hannner bars lor jarring" they same percussivcly, impact bars through nliirli the I'orce of tlnl said hammers orhammer bars 's con-i posite ends of said sleeves or veyed to said screen, said impact hars comprisingcushioning non-metallic portions at beth 4ends of saidv bars, said cushioning portions receiving and delivering` the impact of said hammers or hammer bars, to cushion or soften the impact of the hammer blows.

5. In a separator, 'the combination *ith an. inclined metallic screen et hammers or hammer bars for jarring the same perenssively,

f impact bars through which the force of the said hammers or hammer loa-rs is conveyed to said screen7 said impact bars consisting of metallic sleeves or tubes and Wooden blocks therein and projecting beyond the optuhes and receiving and delivering the impact of said hammers or hammer bars, te cushion or soiten the receiving and delivering impact of the hammer blows.

(3. In a separator, the combination with an inclined, movable er Vibratory screen7 and a casing within which said screen is removably mounted, impact bars for jarring said screen, hammer mechanism acting per1 cusively on said impact bars, said casing having a hinged top on which said hammer mechanism is mounted, so that said hammer ariane? mechanism may he lifted out of the way and said impact hars he taken out when a screen is to 4be removed from said easing, and mechanism for shaking said screen to add te the vibrating movements received through said impact bars.

7. In a separator, the combination with an inclined metallic screen, of hammers er hammer bars for jarring the same )ereus` sii'ely, impact bars through which the force ef' the said hammers or hammer liars is cow .fejyed to said screen, said impact hars each consisting ol a metallic sleeve or tulie and a wooden block therein and projecting beyond the cpposite end of said sleeve or tube and receiving and deliveringr the impact of a. iaminer er hammer liar, to cushion or soften the receiving and deliveringimpact of the hammer blows, and cupped sockets attached. te said screen and receiving' the lower ends of said impact hars.

'in testimony whereof ll allix my signature5 in presence of tive witnesses.

Wl Lilnirlll) J. BELL. liiitnesses Coran R. VALnifc'r;

LOU is l1". inciianu. 

